6015 2014-03-20 13:16:52 +0000 Lttng does not work on qemuarm due to lttng-tracer module not found 2014-08-11 08:18:45 +0000 1 1 11 Runtime General Runtime General Runtime 1.6 x86 Multiple RESOLVED FIXED Medium normal 1.7 1 alexandra.safta bruce.ashfield alexandru.c.georgescu catalin.scrieciu dvhart pokylinux tom.zanussi catalin.scrieciu --- New (Never tested) Don't know oldest_to_newest 41523 0 alexandra.safta 2014-03-20 13:16:52 +0000 When running lttng tools on target-side tests and executing: lttng calibrate -k the following error is displayed: modprobe: FATAL: Module lttng-tracer not found. Error: Unable to load module lttng-tracer Error: Unable to remove module lttng-tracer Warning: No kernel tracer available Error: Kernel tracer not available The same error also affects channel enabling: root@qemuarm:~# lttng enable-channel ch1 -k modprobe: FATAL: Module lttng-tracer not found. Error: Unable to load module lttng-tracer Error: Unable to remove module lttng-tracer Warning: No kernel tracer available Error: Channel ch1: Kernel tracer not available (session auto-20140320-095910) Warning: Some command(S)went wrong root@qemuarm:~# 41553 1 tom.zanussi 2014-03-20 22:51:29 +0000 See below for the threads discussing why this is. Basically, lttng-modules has been blacklisted by the lttng team for arm, therefore no lttng-modules. I originally also removed lttng-tools for that reason, but because lttng-ust is still valid, it was added back, and though lttng-tools exists, it's useless on arm other than for lttng-ust because lttng-modules isn't available on arm. https://www.mail-archive.com/openembedded-core@lists.openembedded.org/msg50051.html https://www.mail-archive.com/openembedded-core@lists.openembedded.org/msg50054.html 41555 2 dvhart 2014-03-20 23:35:21 +0000 THis sounds like a closed wait for upstream or closed not a bug. Thoughts? 41557 3 tom.zanussi 2014-03-20 23:39:11 +0000 Well, it's a bug, but not something I'd fix, so I guess the best course would be to wait for upstream. 43835 4 dvhart 2014-06-09 22:48:45 +0000 Following Tom's advice and marking WaitForUpstream. 45056 5 bruce.ashfield 2014-08-11 03:21:11 +0000 lttng-modules has been re-enabled for ARM in oe-core master. So this is now available. 45058 6 alexandru.c.georgescu 2014-08-11 08:18:45 +0000 Catalin, Can you verify this on our next FP? Thanks, Alex.